MCU-PLUS-SDK-AM243X: AM243x-EVM Unable to flash SOC initialization binary

Hi Daryl,

You are using the correct images according to the device type so the procedure should not ideally fail. Can you please let me know if it is failing randomly or each time on multiple attempts.

Thanks!

Hi Prashant, 
It fails every time. Tried several power cycles etc.
I know I am in UART boot mode correctly because I see the 'C' printed out when I have terminal connected.
Thanks, 
Daryl

Hi Daryl,

Can you please try sending the sbl_uart_uniflash.release.hs_fs.tiimage using Teraterm and see if it is able to send successfully?

Teraterm: File -> Transfer -> XMODEM -> Send -> Path to sbl_uart_uniflash.release.hs_fs.tiimage

Regards,

Prashant

Yes, that XMODEM send via teraterm successfully sends.
SBL isn't updated by this it seems though?
Does this mean I have a python problem?

Some additional debug info I missed before:

C:\ti\mcu_plus_sdk_am243x_09_00_00_35\tools\boot>python uart_uniflash.py -p COM16 --cfg=sbl_prebuilt/am243x-evm/default_sbl_null.cfg

this has this info when it errors out:

| 132/317925 [00:00<10:51, 487.81bytes/s]

This indicates xmodem sent 132 bytes before error occurs...

If I modify the uart_uniflash.py at this line:
modem = XMODEM1k(getc, putc)
#modem = XMODEM(getc, putc)

To use XMODEM module instead of XMODEM 1k that's what causes this difference:

XMODEM 
| 132/317925 [00:00<10:51, 487.81bytes/s]

XMODEM1k
| 1029/317925 [00:00<01:28, 3570.20bytes/s]

Hi Daryl,

Please use the default XMODEM1k protocol only.

Are you making sure that the UART port is not connected anywhere before trying the flashing procedure with the python script?

Regards,

Prashant

Yes, I'm sure it is not connected to anywhere. The UART works in other cases if tried.
The fact that it successfully sends 1029 bytes before erroring out is odd. Is that some clue?

Can I ship this dev kit back and get another one free of charge that works?

Daryl Olsen said:

Can I ship this dev kit back and get another one free of charge that works?

The board is working fine as XMODEM send via Teraterm is successful. It's just that something is wrong in the setup when uart_uniflash.py is tried out.

Can you please try the following modified `uart_uniflash.py` which has the debug logging enabled

import os
import sys
import time
import shlex
import struct
import argparse

try:
    import serial
    from tqdm import tqdm
    from xmodem import XMODEM, XMODEM1k
except ImportError:
    print('[ERROR] Dependant modules not installed, use below pip command to install them. MAKE sure proxy for pip is setup if needed.')
    print('')
    print('python -m pip install pyserial tqdm xmodem --proxy={http://your proxy server:port or leave blank if no proxy}')
    sys.exit(2)

import logging
logging.basicConfig(level=logging.DEBUG)

ERROR_BAD_ARGS      = 1
ERROR_BAD_PORT      = 2
ERROR_BAD_RESPONSE  = 3

CONST_KB = 1024
CONST_MB = CONST_KB * CONST_KB

BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES                   = CONST_MB # This has to be a 256 KB aligned value, because flash writes will be block oriented
BOOTLOADER_UNIFLASH_HEADER_SIZE                      = 32 # 32 B

BOOTLOADER_UNIFLASH_FILE_HEADER_MAGIC_NUMBER         = 0x46554C42 # BLUF
BOOTLOADER_UNIFLASH_RESP_HEADER_MAGIC_NUMBER         = 0x52554C42 # BLUR

BOOTLOADER_UNIFLASH_OPTYPE_FLASH                     = 0xF0
BOOTLOADER_UNIFLASH_OPTYPE_FLASH_VERIFY              = 0xF1
BOOTLOADER_UNIFLASH_OPTYPE_FLASH_XIP                 = 0xF2
BOOTLOADER_UNIFLASH_OPTYPE_FLASH_VERIFY_XIP          = 0xF3
BOOTLOADER_UNIFLASH_OPTYPE_FLASH_TUNING_DATA         = 0xF4
BOOTLOADER_UNIFLASH_OPTYPE_FLASH_ERASE               = 0xFE
BOOTLOADER_UNIFLASH_OPTYPE_EMMC_FLASH                = 0xF5
BOOTLOADER_UNIFLASH_OPTYPE_EMMC_VERIFY               = 0xF6

BOOTLOADER_UNIFLASH_STATUSCODE_SUCCESS                = 0x00000000
BOOTLOADER_UNIFLASH_STATUSCODE_MAGIC_ERROR            = 0x10000001
BOOTLOADER_UNIFLASH_STATUSCODE_OPTYPE_ERROR           = 0x20000001
BOOTLOADER_UNIFLASH_STATUSCODE_FLASH_ERROR            = 0x30000001
BOOTLOADER_UNIFLASH_STATUSCODE_FLASH_VERIFY_ERROR     = 0x40000001
BOOTLOADER_UNIFLASH_STATUSCODE_FLASH_ERASE_ERROR      = 0x50000001

optypewords = {
    "flash" : BOOTLOADER_UNIFLASH_OPTYPE_FLASH,
    "flashverify" : BOOTLOADER_UNIFLASH_OPTYPE_FLASH_VERIFY,
    "flash-xip" : BOOTLOADER_UNIFLASH_OPTYPE_FLASH_XIP,
    "flashverify-xip" : BOOTLOADER_UNIFLASH_OPTYPE_FLASH_VERIFY_XIP,
    "flash-phy-tuning-data" : BOOTLOADER_UNIFLASH_OPTYPE_FLASH_TUNING_DATA,
    "erase" : BOOTLOADER_UNIFLASH_OPTYPE_FLASH_ERASE,
    "flash-emmc":BOOTLOADER_UNIFLASH_OPTYPE_EMMC_FLASH,
    "flashverify-emmc":BOOTLOADER_UNIFLASH_OPTYPE_EMMC_VERIFY,
}

statuscodes = {
    BOOTLOADER_UNIFLASH_STATUSCODE_SUCCESS : "[STATUS] SUCCESS !!!\n",
    BOOTLOADER_UNIFLASH_STATUSCODE_MAGIC_ERROR : "[STATUS] ERROR: Incorrect magic number in file header !!!\n",
    BOOTLOADER_UNIFLASH_STATUSCODE_OPTYPE_ERROR : "[STATUS] ERROR: Invalid file operation type sent !!!\n",
    BOOTLOADER_UNIFLASH_STATUSCODE_FLASH_ERROR : "[STATUS] ERROR: Flashing failed !!!\n",
    BOOTLOADER_UNIFLASH_STATUSCODE_FLASH_VERIFY_ERROR : "[STATUS] ERROR: Flash verify failed !!!\n",
    BOOTLOADER_UNIFLASH_STATUSCODE_FLASH_ERASE_ERROR : "[STATUS] ERROR: Flash erase failed !!!\n",
}

TMP_SUFFIX = ".tmp"

g_script_description = '''
MCU+SDK utility script to flash images to device flash.
'''

g_cfg_file_description = '''
Configuration file which has a list of files with
options for flashing. This should be given as option=value pairs
separated by space just like in command line. Only give the long
options in the config file i.e --flash-offset=0x80000 and not -o 0x80000

Example, below can be a line in the config file, myconfig.cfg
--file=am64x-evm/sbl_ospi.release.tiimage --operation=flash --flash-offset=0x0

and then the script can be called:
python uart_uniflash.py -p <COM port> --cfg=myconfig.cfg
'''

def open_serial_port(serial_port, baudrate, timeout=60):
    ser = None
    try:
        ser = serial.Serial(port=serial_port, baudrate=baudrate, timeout=timeout)
    except serial.serialutil.SerialException:
        print('[ERROR] Serial port [' + serial_port + '] not found or not accessible !!!')
        sys.exit(ERROR_BAD_PORT)
    return ser

def close_serial_port(ser):
    ser.close()

def get_numword(s):
    numword = None
    if(s.startswith('0x')):
        numword = int(s, 16)
    else:
        numword = int(s, 10)
    return numword

# Add the file header with metadata to the file to be sent. Expects a validated linecfg
def create_temp_file(linecfg):
    '''
    File header struct used in the target side :

    typedef struct Bootloader_UniflashFileHeader_s
    {
        uint32_t magicNumber;
        /* BOOTLOADER_UNIFLASH_FILE_HEADER_MAGIC_NUMBER */

        uint32_t operationTypeAndFlags;
        /* LSByte - Operation Type:flash, verify flash or erase */

        uint32_t offset;
        /* Offset to flash, verify flash or erase flash */

        uint32_t eraseSize;
        /* Size of flash to erase */

        uint32_t actualFileSize;
        /* Size of the file sent. This is needed because xmodem returns a padded file size */

        uint32_t rsv1;
        uint32_t rsv2;
        uint32_t rsv3;
        /* Reserved */
    } Bootloader_UniflashFileHeader;

    So we need to use same struct to pack in python
    '''
    file_header_str = '<LLLLLLLL'

    if(linecfg.optype in ("erase", "flash-phy-tuning-data")):
        # No separate file required
        tempfilename = "{}_command".format(linecfg.optype)
    else:
        tempfilename = linecfg.filename + TMP_SUFFIX

    f = open(tempfilename, "wb")

    # Construct the header now, first define the reserved word
    rsv_word = 0xDEADBABE

    # Determine the offset if applicable
    offset_val = rsv_word
    if(linecfg.optype not in ("flash-xip", "flashverify-xip", "flash-phy-tuning-data")):
        offset_val = get_numword(linecfg.offset)

    # Determine the erase size if applicable
    erase_size_val = rsv_word
    if(linecfg.optype in ("erase")):
        erase_size_val = get_numword(linecfg.erase_size)

    # Determine the actual file size if applicable, no original file in case of erase or phy tuning
    actual_file_size = 0
    if(linecfg.optype not in ("erase","flash-phy-tuning-data")):
        actual_file_size = os.path.getsize(linecfg.filename)

    file_header = struct.pack(file_header_str,
                              BOOTLOADER_UNIFLASH_FILE_HEADER_MAGIC_NUMBER,
                              optypewords[linecfg.optype],
                              offset_val,
                              erase_size_val,
                              actual_file_size,
                              rsv_word, rsv_word, rsv_word
                             )

    # Write header to file
    f.write(file_header)

    # No original file in case of erase or phy tuning
    if(linecfg.optype not in ("erase","flash-phy-tuning-data")):
        # copy the original file to this file
        original_file = open(linecfg.filename, "rb")
        f.write(original_file.read())
        original_file.close()

    f.close()

    return tempfilename

# Parse response header sent from EVM
def parse_response_evm(filename):
    f = open(filename, "rb")
    resp_bytes = f.read(16)
    f.close()

    status = None

    resp_magic = int.from_bytes(resp_bytes[0:4], 'little')
    resp_status = int.from_bytes(resp_bytes[4:8], 'little')

    if(resp_magic == BOOTLOADER_UNIFLASH_RESP_HEADER_MAGIC_NUMBER):
        if resp_status in statuscodes.keys():
            status = statuscodes[resp_status]
        else:
            status = "[ERROR] Invalid status code in response !!!"
    else:
        status = "[ERROR] Incorrect magic number in Response Header !!!"

    return status

# Sends the file to EVM via xmodem, receives response from EVM and returns the response status
def xmodem_send_receive_file(filename, serialport, baudrate=115200, get_response=True, read_timeout=60):
    status = False
    timetaken = 0
    if not os.path.exists(filename):
        print('[ERROR] File [' + filename + '] not found !!!')
        sys.exit(ERROR_BAD_ARGS)

    stream = open(filename, 'rb')

    # bar = tqdm(total=os.path.getsize(filename), unit="bytes", leave=False, desc="Sending {}".format(filename.replace(TMP_SUFFIX, "")))

    ser = open_serial_port(serialport, baudrate, timeout=read_timeout)

    def getc(size, timeout=1):
        return ser.read(size) or None

    def putc(data, timeout=1):
        # bar.update(len(data))
        # bar.refresh()
        return ser.write(data)

    try:
        modem = XMODEM1k(getc, putc)
        tstart = time.time()
        status = modem.send(stream, quiet=True,  timeout=10, retry=10)
        tstop = time.time()
        timetaken = round(tstop-tstart, 2)
    except Exception as e:
        status = False
        print(e)

    stream.close()

    if( status is False ) :
        print("")
        print ("[ERROR] XMODEM send failed, no response OR incorrect response from EVM OR cancelled by user,")
        print ("Power cycle EVM and run this script again !!!")
        sys.exit(ERROR_BAD_RESPONSE)

    resp_status = 0

    # Don't do the receive if get_response is False
    if(get_response):
        respfilename = "resp.dat"
        try:
            respfile = open(respfilename, "wb")
            status = modem.recv(respfile, quiet=True, timeout=2000)
            respfile.close()
            resp_status = parse_response_evm(respfilename)
            os.remove(respfilename)
        except:
            status = None
        if( status is None ) :
            print("")
            print ("[ERROR] XMODEM recv failed, no response OR incorrect response from EVM OR cancelled by user,")
            print ("Power cycle EVM and run this script again !!!")
            sys.exit(ERROR_BAD_RESPONSE)

    close_serial_port(ser)

    # bar.close()

    return resp_status, timetaken

def send_file_by_parts(l_cfg, s_port):
    orig_f_name = l_cfg.filename
    orig_offset = l_cfg.offset

    f = open(orig_f_name, "rb")
    f_bytes = f.read()
    f.close()

    num_parts   = int(len(f_bytes) / BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES)
    remain_size = len(f_bytes) % BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES
    total_time_taken = 0


    for i in range(0, num_parts):

        start = i*BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES
        end = start+BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES

        part_data = f_bytes[start:end]
        part_filename = orig_f_name + ".part{}".format(i+1)
        # make the partial file
        f = open(part_filename, "wb")
        f.write(part_data)
        f.close()

        # temporarily change this to the partial filename
        l_cfg.filename = part_filename
        l_cfg.offset = hex(get_numword(orig_offset) + i*BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES)

        # send the partial file normally
        tempfilename = create_temp_file(l_cfg)
        status, timetaken = xmodem_send_receive_file(tempfilename, s_port)
        total_time_taken += timetaken

        # delete the temporary file
        os.remove(part_filename)
        os.remove(tempfilename)

    # Send the last part, if there were residual bytes
    if(remain_size > 0):
        start = num_parts*BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES
        # Read till the end of original file
        part_data = bytearray(f_bytes[start:])
        padding = 256 - (remain_size % 256) # page size adjustment
        # there should be a better way :)
        for i in range(0, padding):
            part_data.append(0)
        part_filename = orig_f_name + ".part{}".format(num_parts+1)

        # make the partial file
        f = open(part_filename, "wb")
        f.write(part_data)
        f.close()

        # temporarily change this to the partial filename
        l_cfg.filename = part_filename
        l_cfg.offset = hex(get_numword(orig_offset) + num_parts*BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES)

        # send the partial file normally
        tempfilename = create_temp_file(l_cfg)
        status, timetaken = xmodem_send_receive_file(tempfilename, s_port)
        total_time_taken += timetaken

        # delete the temporary file
        os.remove(part_filename)
        os.remove(tempfilename)

    # revert back the original filename and offset
    l_cfg.filename = orig_f_name
    l_cfg.offset = orig_offset

    return status, total_time_taken

def main(argv):
    serialport = None
    config_file = None
    cmd_flash_writer_found = False
    ops_invalid = False

    cmdlinecfg = LineCfg(cfg_src="cmd")

    my_parser = argparse.ArgumentParser(description=g_script_description)
    my_parser.add_argument('-p', '--serial-port', required=True, help="[Mandatory argument] Serial port to use for the transfer. COM3, COM4 etc if on windows and /dev/ttyUSB1,/dev/ttyUSB2 etc if on linux.")
    my_parser.add_argument('-f', '--file', required=False, help="Filename to send for an operation. Not required if using config mode (--cfg)")
    my_parser.add_argument('-o', '--flash-offset', required=False, help="Offset (in hexadecimal format starting with a 0x) at which the flash/verify flash is to be done. Not required if using config mode (--cfg)")
    my_parser.add_argument('--operation', required=False, help='Operation to be done on the file => "flash" or "flashverify" or "erase" or "flash-xip" or "flashverify-xip" or "flash-phy-tuning-data" or "flash-emmc" or "flashverify-emmc". Not required if using config mode (--cfg)')
    my_parser.add_argument('--flash-writer', required=False, help="Special option. This will load the sbl_uart_uniflash binary which will be booted by ROM. Other arguments are irrelevant and hence ignored when --flash-writer argument is present. Not required if using config mode (--cfg)")
    my_parser.add_argument('--erase-size', required=False, help='Size of flash to erase. Only valid when operation is "erase"')
    my_parser.add_argument('--cfg', required=False, help=g_cfg_file_description)
    my_parser.add_argument('--chunk-size-kb', required=False, default=CONST_KB, help="Size of the receive buffer in multiples of KB. Defaults to 1024")

    args = my_parser.parse_args()
    
    global BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES
    BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES = CONST_KB * int(args.chunk_size_kb)

    serialport = args.serial_port
    config_file = args.cfg
    cmdlinecfg.filename = args.file
    cmdlinecfg.offset = args.flash_offset
    cmdlinecfg.optype = args.operation
    cmdlinecfg.flashwriter = args.flash_writer
    cmdlinecfg.erase_size = args.erase_size

    if(config_file != None):
        # Check if file exists
        if not os.path.exists(config_file):
            print('[ERROR] Configuration file [' + config_file + '] not found !!!')
            sys.exit(ERROR_BAD_ARGS)

        print("")
        print("Parsing config file ...")
        filecfg = FileCfg(config_file)
        parse_status = filecfg.parse()

        if(parse_status != 0):
            print(parse_status)
            sys.exit(ERROR_BAD_ARGS)
        else:
            # No errors, can proceed to flash
            print("Parsing config file ... SUCCESS. Found {} command(s) !!!".format(len(filecfg.cfgs)))
            print("")

            if(filecfg.flash_writer_index != None):
                # Found flash writer, flash it
                cfg_flash_writer_file = filecfg.cfgs[filecfg.flash_writer_index].flashwriter
                print("Executing command {} of {} ...".format(1, len(filecfg.cfgs)))
                print("Found flash writer ... sending {}".format(cfg_flash_writer_file))
                status, timetaken = xmodem_send_receive_file(cfg_flash_writer_file, serialport, get_response=False)
                print("Sent flashwriter {} of size {} bytes in {}s.".format(cfg_flash_writer_file, os.path.getsize(cfg_flash_writer_file), timetaken))
                print("")

            # loop through cfgs and lines, skip the process for flashwriter
            for i in range(0, len(filecfg.cfgs)):
                if(i != filecfg.flash_writer_index):
                    line = filecfg.lines[i]
                    linecfg = filecfg.cfgs[i]
                    print("Executing command {} of {} ...".format(i+1, len(filecfg.cfgs)))
                    print("Command arguments : {}".format(line.rstrip('\n')))
                    # Check if the size of application image is larger than buffer size in target side.
                    f_size = 0
                    if linecfg.filename is not None:
                        f_size = os.path.getsize(linecfg.filename)

                    if((f_size + BOOTLOADER_UNIFLASH_HEADER_SIZE >= BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES) and (linecfg.optype in ["flash", "flashverify"])):
                        # Send by parts
                        status, timetaken = send_file_by_parts(linecfg, serialport)
                    else:
                        # Send normally
                        tempfilename = create_temp_file(linecfg)
                        status, timetaken = xmodem_send_receive_file(tempfilename, serialport, get_response=True)

                    orig_filename = linecfg.filename
                    if(linecfg.optype == "erase"):
                        print("Sent flash erase command.")
                    elif(linecfg.optype == "flash-phy-tuning-data"):
                        print("Sent flash phy tuning data in {}s.".format(timetaken))
                    else:
                        print("Sent {} of size {} bytes in {}s.".format(orig_filename, os.path.getsize(orig_filename), timetaken))
                    print(status)
                    # Delete the tempfile if it exists
                    if(os.path.exists(tempfilename)):
                        os.remove(tempfilename)

            print("All commands from config file are executed !!!")

    else:
        # Validate the cmdline config
        status = cmdlinecfg.validate()
        if(status != 0):
            print(status)
            if(cmdlinecfg.exit_now == True):
                sys.exit(ERROR_BAD_ARGS)
        # If flash writer was found, send it first
        if(cmdlinecfg.found_flashwriter_cmd == True):
            print("Found flash writer ... sending {}".format(cmdlinecfg.flashwriter))
            status, timetaken = xmodem_send_receive_file(cmdlinecfg.flashwriter, serialport, get_response=False)
            print("Sent flashwriter {} of size {} bytes in {}s.".format(cmdlinecfg.flashwriter, os.path.getsize(cmdlinecfg.flashwriter), timetaken))
            print("")

        if(cmdlinecfg.ops_invalid == False):
            # Check if the size of application image is larger than buffer size in target side.
            f_size = 0
            if cmdlinecfg.filename is not None:
                f_size = os.path.getsize(cmdlinecfg.filename)

            if((f_size + BOOTLOADER_UNIFLASH_HEADER_SIZE >= BOOTLOADER_UNIFLASH_BUF_SIZE_BYTES) and (cmdlinecfg.optype in ["flash", "flashverify"])):
                # Send by parts
                status, timetaken = send_file_by_parts(cmdlinecfg, serialport)
            else:
                # Send normally
                tempfilename = create_temp_file(cmdlinecfg)
                status, timetaken = xmodem_send_receive_file(tempfilename, serialport)
                # Delete the tempfile if it exists
                if(os.path.exists(tempfilename)):
                    os.remove(tempfilename)

            orig_filename = cmdlinecfg.filename
            if(cmdlinecfg.optype == "erase"):
                print("Sent flash erase command.")
            elif(cmdlinecfg.optype == "flash-phy-tuning-data"):
                print("Sent flash phy tuning data in {}s.".format(timetaken))
            else:
                print("Sent {} of size {} bytes in {}s.".format(orig_filename, os.path.getsize(orig_filename), timetaken))
            print(status)

# Class definitions used
class LineCfg():
    def __init__(self, line=None, filename=None, optype=None, offset=None, erase_size=None, flashwriter=None, cfg_src="cfg"):
        self.line = line
        self.filename = filename
        self.optype = optype
        self.offset = offset
        self.flashwriter = flashwriter
        self.erase_size = erase_size
        self.found_flashwriter_cmd = False
        self.ops_invalid = False
        self.cfg_src = cfg_src
        self.exit_now = False

    # Takes a string of comma separated key=value pairs and parses into a dictionary
    def parse_to_dict(self, config_string):
        config_dict = dict()
        splitter = shlex.shlex(config_string, posix=True)
        splitter.commenters="#"
        splitter.whitespace = ' '
        splitter.whitespace_split = True

        for key_value_pair in splitter:
            kv = key_value_pair.strip()
            if not kv:
                continue
            kv_t = kv.split('=', 1)
            if(len(kv_t)==1):
                #error, no value
                pass
            else:
                config_dict[kv_t[0]] = kv_t[1]

        return config_dict

    def validate(self):
        status = 0
        optypes = list(optypewords.keys())
        # Check if called by config file parser or direct command line
        if(self.line!=None and self.cfg_src=="cfg"):
            # Called from config_file
            config_dict = self.parse_to_dict(self.line)

            if not config_dict:
                status = "invalid_line"
            else:
                # check for flashwriter
                if "--flash-writer" not in config_dict.keys():
                    # it is okay not to have a flashwriter, in this case
                    # user is expected to have flashed the flashwriter upfront
                    # Check for other arguments
                    # check if file is present
                    if "--operation" not in config_dict.keys():
                        status = "[ERROR] No file operation specified !!!"
                        return status
                    else:
                        self.optype = config_dict["--operation"]

                    if(self.optype == "flash" or self.optype == "flashverify" or self.optype == "erase" or self.optype == "flash-emmc" or\
                        self.optype == "flashverify-emmc"):
                        if "--flash-offset" not in config_dict.keys():
                            status = "[ERROR] Operation selected was {}, but no offset provided !!!".format(self.optype)
                            return status
                        else:
                            self.offset = config_dict["--flash-offset"]

                    if(self.optype == "flash" or self.optype == "flashverify" or self.optype == "flash-xip" or self.optype == "flashverify-xip" or\
                        self.optype == "flash-emmc" or self.optype == "flashverify-emmc"):
                        if "--file" not in config_dict.keys():
                            status = "[ERROR] Operation selected was {}, but no filename provided !!!".format(self.optype)
                            return status
                        else:
                            self.filename = config_dict["--file"]

                    if(self.optype == "erase"):
                        if "--erase-size" not in config_dict.keys():
                            status = "[ERROR] Operation selected was {}, but no erase size provided !!!".format(self.optype)
                            return status
                        else:
                            self.erase_size = config_dict["--erase-size"]

                    #No errors in parsing, now validate params to the extent possible

                    if(self.optype not in ("erase", "flash-phy-tuning-data")):
                        try:
                            f = open(self.filename)
                        except FileNotFoundError:
                            status = "[ERROR] File not found !!!"
                            return status

                    if(self.optype not in optypes):
                        status = "[ERROR] Invalid File Operation type !!!"
                        return status

                else:
                    # we have a flash writer argument, other arguments are moot
                    self.flashwriter = config_dict["--flash-writer"]

                    try:
                        f = open(self.flashwriter)
                    except FileNotFoundError:
                        status = "[ERROR] Flashwriter file not found !!!"
                        return status

        elif(self.line==None and self.cfg_src=="cmd"):
            # Called from main, with cmd line arguments
            # We have the filename, optype etc already filled
            if(self.flashwriter != None):
                self.found_flashwriter_cmd = True
            else:
                self.found_flashwriter_cmd = False

            if(self.optype == None):
                # mandatory arg. If no flashwriter, caller should exit now
                self.ops_invalid = True
                self.exit_now = not self.found_flashwriter_cmd
                if(self.found_flashwriter_cmd == False):
                    status = "[ERROR] No operation type mentioned !!!"
                    return status
                else:
                    pass
            else:
                if((self.optype == "flash" or self.optype == "flashverify" or self.optype == "erase" or self.optype == "flashverify-emmc") and (self.offset == None)):
                    self.ops_invalid = True
                    self.exit_now = not self.found_flashwriter_cmd
                    # flash/verify flash/erase, but no offset given. exit with help if no flashwriter
                    if(self.found_flashwriter_cmd == False):
                        status = "[ERROR] Operation selected was {}, but no offset was provided !!!".format(self.optype)
                        return status
                    else:
                        pass

                if((self.optype == "flash" or self.optype == "flashverify" or self.optype == "flash-xip" or self.optype == "flashverify-xip" or self.optype == "flashverify-emmc") and (self.filename == None)):
                    self.ops_invalid = True
                    self.exit_now = not self.found_flashwriter_cmd
                    # flash/verify flash/erase, but no filename given. exit with help if no flashwriter
                    if(self.found_flashwriter_cmd == False):
                        status = "[ERROR] Operation selected was {}, but no filename was provided !!!".format(self.optype)
                        return status
                    else:
                        pass

                if(self.optype == "erase" and self.erase_size == None):
                    self.ops_invalid = True
                    self.exit_now = not self.found_flashwriter_cmd
                    # erase command found, but no erase size given. exit with help if no flashwriter
                    if(self.found_flashwriter_cmd == False):
                        status = "[ERROR] Operation selected was {}, but no erase size was provided !!!".format(self.optype)
                        return status
                    else:
                        pass

                if(self.optype not in optypes):
                    self.ops_invalid = True
                    self.exit_now = not self.found_flashwriter_cmd
                    # erase command found, but no erase size given. exit with help if no flashwriter
                    if(self.found_flashwriter_cmd == False):
                        status = "[ERROR] Invalid File Operation type !!!"
                        return status
                    else:
                        pass
                if(self.optype not in ("erase", "flash-phy-tuning-data")):
                    try:
                        f = open(self.filename)
                    except FileNotFoundError:
                        self.ops_invalid = True
                        self.exit_now = not self.found_flashwriter_cmd
                        # erase command found, but no erase size given. exit with help if no flashwriter
                        if(self.found_flashwriter_cmd == False):
                            status = "[ERROR] File not found !!!"
                            return status
                        else:
                            pass
        else:
            # Should not hit this
            status = -1
        return status

class FileCfg():
    def __init__(self, filename=None):
        self.filename = filename
        self.lines = list()
        self.cfgs = list()
        self.errors = list()
        self.flash_writer_index = None

    def parse(self):
        f = open(self.filename, "r")
        lines = f.readlines()
        f.close()
        parse_status = 0
        linecount = 0
        found_fw = False
        valid_cfg_count = 0

        for line in lines:
            linecfg = LineCfg(line=line)
            status = linecfg.validate()

            if(status != 0 and status != "invalid_line"):
                self.errors.append("[ERROR] Parsing error found on line {} of {}\n{}\n".format(linecount+1, self.filename, status))
            else:
                if(status != "invalid_line"):
                    if(linecfg.flashwriter != None):
                        if(found_fw == True):
                            # error, another instance of flashwriter found
                            flash_writer_error_msg = "[ERROR] Redefinition of flash writer !!!"
                            self.errors.append("[ERROR] Parsing error found on line {} of {}\n{}\n".format(linecount+1, self.filename, flash_writer_error_msg))
                        else:
                            found_fw = True
                            self.cfgs.append(linecfg)
                            self.lines.append(line.rstrip('\n'))
                            self.flash_writer_index = valid_cfg_count
                            valid_cfg_count += 1
                    else:
                        self.cfgs.append(linecfg)
                        self.lines.append(line.rstrip('\n'))
                        valid_cfg_count += 1
            linecount += 1

        if(len(self.errors) > 0):
            # Some commands have errors
            parse_status = "Parsing config file ... ERROR. {} error(s).\n\n".format(len(self.errors)) + "\n".join(self.errors)

        return parse_status

if __name__ == "__main__":
    main(sys.argv[1:])
    

C:\ti\mcu_plus_sdk_am243x_09_00_00_35\tools\boot>python uart_uniflash.py -p COM16 --cfg=sbl_prebuilt/am243x-evm/default_sbl_null.cfg

Parsing config file ...
Parsing config file ... SUCCESS. Found 2 command(s) !!!

Executing command 1 of 2 ...
Found flash writer ... sending sbl_prebuilt/am243x-evm/sbl_uart_uniflash.release.hs_fs.tiimage
DEBUG:xmodem.XMODEM:Begin start sequence, packet_size=1024
DEBUG:xmodem.XMODEM:16-bit CRC requested (CRC).
DEBUG:xmodem.XMODEM:send: block 1
DEBUG:xmodem.XMODEM:send: block 2
DEBUG:xmodem.XMODEM:send: block 3
DEBUG:xmodem.XMODEM:send: block 4
DEBUG:xmodem.XMODEM:send: block 5
DEBUG:xmodem.XMODEM:send: block 6
DEBUG:xmodem.XMODEM:send: block 7
DEBUG:xmodem.XMODEM:send: block 8
DEBUG:xmodem.XMODEM:send: block 9
DEBUG:xmodem.XMODEM:send: block 10
DEBUG:xmodem.XMODEM:send: block 11
DEBUG:xmodem.XMODEM:send: block 12
DEBUG:xmodem.XMODEM:send: block 13
DEBUG:xmodem.XMODEM:send: block 14
DEBUG:xmodem.XMODEM:send: block 15
DEBUG:xmodem.XMODEM:send: block 16
DEBUG:xmodem.XMODEM:send: block 17
DEBUG:xmodem.XMODEM:send: block 18
DEBUG:xmodem.XMODEM:send: block 19
DEBUG:xmodem.XMODEM:send: block 20
DEBUG:xmodem.XMODEM:send: block 21
DEBUG:xmodem.XMODEM:send: block 22
DEBUG:xmodem.XMODEM:send: block 23
DEBUG:xmodem.XMODEM:send: block 24
DEBUG:xmodem.XMODEM:send: block 25
DEBUG:xmodem.XMODEM:send: block 26
DEBUG:xmodem.XMODEM:send: block 27
DEBUG:xmodem.XMODEM:send: block 28
DEBUG:xmodem.XMODEM:send: block 29
DEBUG:xmodem.XMODEM:send: block 30
DEBUG:xmodem.XMODEM:send: block 31
DEBUG:xmodem.XMODEM:send: block 32
DEBUG:xmodem.XMODEM:send: block 33
DEBUG:xmodem.XMODEM:send: block 34
DEBUG:xmodem.XMODEM:send: block 35
DEBUG:xmodem.XMODEM:send: block 36
DEBUG:xmodem.XMODEM:send: block 37
DEBUG:xmodem.XMODEM:send: block 38
DEBUG:xmodem.XMODEM:send: block 39
DEBUG:xmodem.XMODEM:send: block 40
DEBUG:xmodem.XMODEM:send: block 41
DEBUG:xmodem.XMODEM:send: block 42
DEBUG:xmodem.XMODEM:send: block 43
DEBUG:xmodem.XMODEM:send: block 44
DEBUG:xmodem.XMODEM:send: block 45
DEBUG:xmodem.XMODEM:send: block 46
DEBUG:xmodem.XMODEM:send: block 47
DEBUG:xmodem.XMODEM:send: block 48
DEBUG:xmodem.XMODEM:send: block 49
DEBUG:xmodem.XMODEM:send: block 50
DEBUG:xmodem.XMODEM:send: block 51
DEBUG:xmodem.XMODEM:send: block 52
DEBUG:xmodem.XMODEM:send: block 53
DEBUG:xmodem.XMODEM:send: block 54
DEBUG:xmodem.XMODEM:send: block 55
DEBUG:xmodem.XMODEM:send: block 56
DEBUG:xmodem.XMODEM:send: block 57
DEBUG:xmodem.XMODEM:send: block 58
DEBUG:xmodem.XMODEM:send: block 59
DEBUG:xmodem.XMODEM:send: block 60
DEBUG:xmodem.XMODEM:send: block 61
DEBUG:xmodem.XMODEM:send: block 62
DEBUG:xmodem.XMODEM:send: block 63
DEBUG:xmodem.XMODEM:send: block 64
DEBUG:xmodem.XMODEM:send: block 65
DEBUG:xmodem.XMODEM:send: block 66
DEBUG:xmodem.XMODEM:send: block 67
DEBUG:xmodem.XMODEM:send: block 68
DEBUG:xmodem.XMODEM:send: block 69
DEBUG:xmodem.XMODEM:send: block 70
DEBUG:xmodem.XMODEM:send: block 71
DEBUG:xmodem.XMODEM:send: block 72
DEBUG:xmodem.XMODEM:send: block 73
DEBUG:xmodem.XMODEM:send: block 74
DEBUG:xmodem.XMODEM:send: block 75
DEBUG:xmodem.XMODEM:send: block 76
DEBUG:xmodem.XMODEM:send: block 77
DEBUG:xmodem.XMODEM:send: block 78
DEBUG:xmodem.XMODEM:send: block 79
DEBUG:xmodem.XMODEM:send: block 80
DEBUG:xmodem.XMODEM:send: block 81
DEBUG:xmodem.XMODEM:send: block 82
DEBUG:xmodem.XMODEM:send: block 83
DEBUG:xmodem.XMODEM:send: block 84
DEBUG:xmodem.XMODEM:send: block 85
DEBUG:xmodem.XMODEM:send: block 86
DEBUG:xmodem.XMODEM:send: block 87
DEBUG:xmodem.XMODEM:send: block 88
DEBUG:xmodem.XMODEM:send: block 89
DEBUG:xmodem.XMODEM:send: block 90
DEBUG:xmodem.XMODEM:send: block 91
DEBUG:xmodem.XMODEM:send: block 92
DEBUG:xmodem.XMODEM:send: block 93
DEBUG:xmodem.XMODEM:send: block 94
DEBUG:xmodem.XMODEM:send: block 95
DEBUG:xmodem.XMODEM:send: block 96
DEBUG:xmodem.XMODEM:send: block 97
DEBUG:xmodem.XMODEM:send: block 98
DEBUG:xmodem.XMODEM:send: block 99
DEBUG:xmodem.XMODEM:send: block 100
DEBUG:xmodem.XMODEM:send: block 101
DEBUG:xmodem.XMODEM:send: block 102
DEBUG:xmodem.XMODEM:send: block 103
DEBUG:xmodem.XMODEM:send: block 104
DEBUG:xmodem.XMODEM:send: block 105
DEBUG:xmodem.XMODEM:send: block 106
DEBUG:xmodem.XMODEM:send: block 107
DEBUG:xmodem.XMODEM:send: block 108
DEBUG:xmodem.XMODEM:send: block 109
DEBUG:xmodem.XMODEM:send: block 110
DEBUG:xmodem.XMODEM:send: block 111
DEBUG:xmodem.XMODEM:send: block 112
DEBUG:xmodem.XMODEM:send: block 113
DEBUG:xmodem.XMODEM:send: block 114
DEBUG:xmodem.XMODEM:send: block 115
DEBUG:xmodem.XMODEM:send: block 116
DEBUG:xmodem.XMODEM:send: block 117
DEBUG:xmodem.XMODEM:send: block 118
DEBUG:xmodem.XMODEM:send: block 119
DEBUG:xmodem.XMODEM:send: block 120
DEBUG:xmodem.XMODEM:send: block 121
DEBUG:xmodem.XMODEM:send: block 122
DEBUG:xmodem.XMODEM:send: block 123
DEBUG:xmodem.XMODEM:send: block 124
DEBUG:xmodem.XMODEM:send: block 125
DEBUG:xmodem.XMODEM:send: block 126
DEBUG:xmodem.XMODEM:send: block 127
DEBUG:xmodem.XMODEM:send: block 128
DEBUG:xmodem.XMODEM:send: block 129
DEBUG:xmodem.XMODEM:send: block 130
DEBUG:xmodem.XMODEM:send: block 131
DEBUG:xmodem.XMODEM:send: block 132
DEBUG:xmodem.XMODEM:send: block 133
DEBUG:xmodem.XMODEM:send: block 134
DEBUG:xmodem.XMODEM:send: block 135
DEBUG:xmodem.XMODEM:send: block 136
DEBUG:xmodem.XMODEM:send: block 137
DEBUG:xmodem.XMODEM:send: block 138
DEBUG:xmodem.XMODEM:send: block 139
DEBUG:xmodem.XMODEM:send: block 140
DEBUG:xmodem.XMODEM:send: block 141
DEBUG:xmodem.XMODEM:send: block 142
DEBUG:xmodem.XMODEM:send: block 143
DEBUG:xmodem.XMODEM:send: block 144
DEBUG:xmodem.XMODEM:send: block 145
DEBUG:xmodem.XMODEM:send: block 146
DEBUG:xmodem.XMODEM:send: block 147
DEBUG:xmodem.XMODEM:send: block 148
DEBUG:xmodem.XMODEM:send: block 149
DEBUG:xmodem.XMODEM:send: block 150
DEBUG:xmodem.XMODEM:send: block 151
DEBUG:xmodem.XMODEM:send: block 152
DEBUG:xmodem.XMODEM:send: block 153
DEBUG:xmodem.XMODEM:send: block 154
DEBUG:xmodem.XMODEM:send: block 155
DEBUG:xmodem.XMODEM:send: block 156
DEBUG:xmodem.XMODEM:send: block 157
DEBUG:xmodem.XMODEM:send: block 158
DEBUG:xmodem.XMODEM:send: block 159
DEBUG:xmodem.XMODEM:send: block 160
DEBUG:xmodem.XMODEM:send: block 161
DEBUG:xmodem.XMODEM:send: block 162
DEBUG:xmodem.XMODEM:send: block 163
DEBUG:xmodem.XMODEM:send: block 164
DEBUG:xmodem.XMODEM:send: block 165
DEBUG:xmodem.XMODEM:send: block 166
DEBUG:xmodem.XMODEM:send: block 167
DEBUG:xmodem.XMODEM:send: block 168
DEBUG:xmodem.XMODEM:send: block 169
DEBUG:xmodem.XMODEM:send: block 170
DEBUG:xmodem.XMODEM:send: block 171
DEBUG:xmodem.XMODEM:send: block 172
DEBUG:xmodem.XMODEM:send: block 173
DEBUG:xmodem.XMODEM:send: block 174
DEBUG:xmodem.XMODEM:send: block 175
DEBUG:xmodem.XMODEM:send: block 176
DEBUG:xmodem.XMODEM:send: block 177
DEBUG:xmodem.XMODEM:send: block 178
DEBUG:xmodem.XMODEM:send: block 179
DEBUG:xmodem.XMODEM:send: block 180
DEBUG:xmodem.XMODEM:send: block 181
DEBUG:xmodem.XMODEM:send: block 182
DEBUG:xmodem.XMODEM:send: block 183
DEBUG:xmodem.XMODEM:send: block 184
DEBUG:xmodem.XMODEM:send: block 185
DEBUG:xmodem.XMODEM:send: block 186
DEBUG:xmodem.XMODEM:send: block 187
DEBUG:xmodem.XMODEM:send: block 188
DEBUG:xmodem.XMODEM:send: block 189
DEBUG:xmodem.XMODEM:send: block 190
DEBUG:xmodem.XMODEM:send: block 191
DEBUG:xmodem.XMODEM:send: block 192
DEBUG:xmodem.XMODEM:send: block 193
DEBUG:xmodem.XMODEM:send: block 194
DEBUG:xmodem.XMODEM:send: block 195
DEBUG:xmodem.XMODEM:send: block 196
DEBUG:xmodem.XMODEM:send: block 197
DEBUG:xmodem.XMODEM:send: block 198
DEBUG:xmodem.XMODEM:send: block 199
DEBUG:xmodem.XMODEM:send: block 200
DEBUG:xmodem.XMODEM:send: block 201
DEBUG:xmodem.XMODEM:send: block 202
DEBUG:xmodem.XMODEM:send: block 203
DEBUG:xmodem.XMODEM:send: block 204
DEBUG:xmodem.XMODEM:send: block 205
DEBUG:xmodem.XMODEM:send: block 206
DEBUG:xmodem.XMODEM:send: block 207
DEBUG:xmodem.XMODEM:send: block 208
DEBUG:xmodem.XMODEM:send: block 209
DEBUG:xmodem.XMODEM:send: block 210
DEBUG:xmodem.XMODEM:send: block 211
DEBUG:xmodem.XMODEM:send: block 212
DEBUG:xmodem.XMODEM:send: block 213
DEBUG:xmodem.XMODEM:send: block 214
DEBUG:xmodem.XMODEM:send: block 215
DEBUG:xmodem.XMODEM:send: block 216
DEBUG:xmodem.XMODEM:send: block 217
DEBUG:xmodem.XMODEM:send: block 218
DEBUG:xmodem.XMODEM:send: block 219
DEBUG:xmodem.XMODEM:send: block 220
DEBUG:xmodem.XMODEM:send: block 221
DEBUG:xmodem.XMODEM:send: block 222
DEBUG:xmodem.XMODEM:send: block 223
DEBUG:xmodem.XMODEM:send: block 224
DEBUG:xmodem.XMODEM:send: block 225
DEBUG:xmodem.XMODEM:send: block 226
DEBUG:xmodem.XMODEM:send: block 227
DEBUG:xmodem.XMODEM:send: block 228
DEBUG:xmodem.XMODEM:send: block 229
DEBUG:xmodem.XMODEM:send: block 230
DEBUG:xmodem.XMODEM:send: block 231
DEBUG:xmodem.XMODEM:send: block 232
DEBUG:xmodem.XMODEM:send: block 233
DEBUG:xmodem.XMODEM:send: block 234
DEBUG:xmodem.XMODEM:send: block 235
DEBUG:xmodem.XMODEM:send: block 236
DEBUG:xmodem.XMODEM:send: block 237
DEBUG:xmodem.XMODEM:send: block 238
DEBUG:xmodem.XMODEM:send: block 239
DEBUG:xmodem.XMODEM:send: block 240
DEBUG:xmodem.XMODEM:send: block 241
DEBUG:xmodem.XMODEM:send: block 242
DEBUG:xmodem.XMODEM:send: block 243
DEBUG:xmodem.XMODEM:send: block 244
DEBUG:xmodem.XMODEM:send: block 245
DEBUG:xmodem.XMODEM:send: block 246
DEBUG:xmodem.XMODEM:send: block 247
DEBUG:xmodem.XMODEM:send: block 248
DEBUG:xmodem.XMODEM:send: block 249
DEBUG:xmodem.XMODEM:send: block 250
DEBUG:xmodem.XMODEM:send: block 251
DEBUG:xmodem.XMODEM:send: block 252
DEBUG:xmodem.XMODEM:send: block 253
DEBUG:xmodem.XMODEM:send: block 254
DEBUG:xmodem.XMODEM:send: block 255
DEBUG:xmodem.XMODEM:send: block 0
DEBUG:xmodem.XMODEM:send: block 1
DEBUG:xmodem.XMODEM:send: block 2
DEBUG:xmodem.XMODEM:send: block 3
DEBUG:xmodem.XMODEM:send: block 4
DEBUG:xmodem.XMODEM:send: block 5
DEBUG:xmodem.XMODEM:send: block 6
DEBUG:xmodem.XMODEM:send: block 7
DEBUG:xmodem.XMODEM:send: block 8
DEBUG:xmodem.XMODEM:send: block 9
DEBUG:xmodem.XMODEM:send: block 10
DEBUG:xmodem.XMODEM:send: block 11
DEBUG:xmodem.XMODEM:send: block 12
DEBUG:xmodem.XMODEM:send: block 13
DEBUG:xmodem.XMODEM:send: block 14
DEBUG:xmodem.XMODEM:send: block 15
DEBUG:xmodem.XMODEM:send: block 16
DEBUG:xmodem.XMODEM:send: block 17
DEBUG:xmodem.XMODEM:send: block 18
DEBUG:xmodem.XMODEM:send: block 19
DEBUG:xmodem.XMODEM:send: block 20
DEBUG:xmodem.XMODEM:send: block 21
DEBUG:xmodem.XMODEM:send: block 22
DEBUG:xmodem.XMODEM:send: block 23
DEBUG:xmodem.XMODEM:send: block 24
DEBUG:xmodem.XMODEM:send: block 25
DEBUG:xmodem.XMODEM:send: block 26
DEBUG:xmodem.XMODEM:send: block 27
DEBUG:xmodem.XMODEM:send: block 28
DEBUG:xmodem.XMODEM:send: block 29
DEBUG:xmodem.XMODEM:send: block 30
DEBUG:xmodem.XMODEM:send: block 31
DEBUG:xmodem.XMODEM:send: block 32
DEBUG:xmodem.XMODEM:send: block 33
DEBUG:xmodem.XMODEM:send: block 34
DEBUG:xmodem.XMODEM:send: block 35
DEBUG:xmodem.XMODEM:send: block 36
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'0' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'2' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'0' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'0' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'0' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'0' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'0' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'0' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'0' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'1' for block 37
DEBUG:xmodem.XMODEM:send: block 37
ERROR:xmodem.XMODEM:send error: expected ACK; got b'1' for block 37
ERROR:xmodem.XMODEM:send error: NAK received 11 times, aborting.

[ERROR] XMODEM send failed, no response OR incorrect response from EVM OR cancelled by user,
Power cycle EVM and run this script again !!!

It looks the script is able to send the blocks but after sometime the board resets. Please note, this behaviour might be because of an Errata i2371 associated with the UART boot. You can find information on Errata i2371 here: https://www.ti.com/lit/er/sprz457h/sprz457h.pdf

Have you tried the flashing procedure for multiple PORs and observe the same issue?

So how am I supposed to use this eval kit at all to run the SDK examples?
If the first step in running examples is updating this flash and I can't update the flash due to silicon errata.
This is unacceptable and the eval kit should be refunded.
Or resend me one that actually works free of charge.

After getting schematic and hitting SW4 to warm reset the board, I got one to pass finally.
It took several tries but one succeeded. Thanks for the POR suggestion.

DEBUG:xmodem.XMODEM:send: block 245
DEBUG:xmodem.XMODEM:send: block 246
DEBUG:xmodem.XMODEM:send: block 247
DEBUG:xmodem.XMODEM:send: block 248
DEBUG:xmodem.XMODEM:send: block 249
DEBUG:xmodem.XMODEM:send: block 250
DEBUG:xmodem.XMODEM:send: block 251
DEBUG:xmodem.XMODEM:send: block 252
DEBUG:xmodem.XMODEM:send: block 253
DEBUG:xmodem.XMODEM:send: block 254
DEBUG:xmodem.XMODEM:send: block 255
DEBUG:xmodem.XMODEM:send: block 0
DEBUG:xmodem.XMODEM:send: block 1
DEBUG:xmodem.XMODEM:send: block 2
DEBUG:xmodem.XMODEM:send: block 3
DEBUG:xmodem.XMODEM:send: block 4
DEBUG:xmodem.XMODEM:send: block 5
DEBUG:xmodem.XMODEM:send: block 6
DEBUG:xmodem.XMODEM:send: block 7
DEBUG:xmodem.XMODEM:send: block 8
DEBUG:xmodem.XMODEM:send: block 9
DEBUG:xmodem.XMODEM:send: block 10
DEBUG:xmodem.XMODEM:send: at EOF
DEBUG:xmodem.XMODEM:sending EOT, awaiting ACK
INFO:xmodem.XMODEM:Transmission successful (ACK received).
DEBUG:xmodem.XMODEM:recv: SOH
DEBUG:xmodem.XMODEM:recv: data block 1
INFO:xmodem.XMODEM:Transmission complete, 128 bytes
Sent sbl_prebuilt/am243x-evm/sbl_null.release.hs_fs.tiimage of size 271805 bytes in 28.97s.
[STATUS] SUCCESS !!!

All commands from config file are executed !!!

After switching to QSPI mode, I see this:

Starting NULL Bootloader ... 

DMSC Firmware Version 9.0.7--v09.00.07 (Kool Koala)
DMSC Firmware revision 0x9
DMSC ABI revision 3.1

INFO: Bootloader_runCpu:155: CPU r5f1-0  is initialized to 800000000 Hz !!!
INFO: Bootloader_runCpu:155: CPU r5f1-1 is initialized to 800000000 Hz !!!
INFO: Bootloader_runCpu:155: CPU m4f0-0 is initialized to 400000000 Hz !!!
INFO: Bootloader_loadSelfCpu:207: CPU r5f0-0 is initialized to 800000000 Hz !!!
INFO: Bootloader_loadSelfCpu:207: CPU r5f0-1 is initialized to 800000000 Hz !!!
INFO: Bootloader_runSelfCpu:217: All done, reseting self ...

I'm asking if this is right because it doesn't match the version here in the EVM setup guide:
software-dl.ti.com/.../EVM_SETUP_PAGE.html

Thanks for your help resolving issue and clarification on SBL build. Much appreciated.